[PATCH 03/21] drm: Add support for pps and compression mode command packet
flat view
STALE3007d
From: Sean Paul <hidden>
Date: 2018-07-09 17:32:53
Also in:
dri-devel, linux-arm-msm, lkml
Subsystem:
drm drivers, drm drivers and misc gpu patches, framebuffer layer, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Helge Deller, Linus Torvalds
From: vkorjani <redacted> After enabling DSC we need to send compression mode command packet and pps data packet, for which 2 new data types are added 07h Compression Mode Data Type Write , short write, 2 parameters 0Ah PPS Long Write (word count determines number of bytes) This patch adds support to send these packets. Cc: David Airlie <redacted> Cc: Jean-Christophe Plagniol-Villard <redacted> Cc: Tomi Valkeinen <redacted> Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Cc: linux-fbdev@vger.kernel.org Signed-off-by: vkorjani <redacted> [seanpaul removed pps_write_buffer fn, added types to packet_format helpers] Signed-off-by: Sean Paul <redacted> --- drivers/gpu/drm/drm_mipi_dsi.c | 2 ++ include/video/mipi_display.h | 3 +++ 2 files changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index bc73b7f5b9fc..80b75501f5c6 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c@@ -392,6 +392,7 @@ bool mipi_dsi_packet_format_is_short(u8 type) case MIPI_DSI_DCS_SHORT_WRITE: case MIPI_DSI_DCS_SHORT_WRITE_PARAM: case MIPI_DSI_DCS_READ: + case MIPI_DSI_DCS_COMPRESSION_MODE: case MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE: return true; }
@@ -410,6 +411,7 @@ EXPORT_SYMBOL(mipi_dsi_packet_format_is_short); bool mipi_dsi_packet_format_is_long(u8 type) { switch (type) { + case MIPI_DSI_PPS_LONG_WRITE: case MIPI_DSI_NULL_PACKET: case MIPI_DSI_BLANKING_PACKET: case MIPI_DSI_GENERIC_LONG_WRITE:
diff --git a/include/video/mipi_display.h b/include/video/mipi_display.h
index 19aa65a35546..49a53ef8da96 100644
--- a/include/video/mipi_display.h
+++ b/include/video/mipi_display.h@@ -38,6 +38,9 @@ enum { MIPI_DSI_DCS_READ = 0x06, + MIPI_DSI_DCS_COMPRESSION_MODE = 0x07, + MIPI_DSI_PPS_LONG_WRITE = 0x0A, + MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE = 0x37, MIPI_DSI_END_OF_TRANSMISSION = 0x08,
--
Sean Paul, Software Engineer, Google / Chromium OS